Need A Part/bolt Identified

T

triumphantrider

Member
Local time
Today, 15:54
Joined
May 21, 2024
Messages
43
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Age
35
Location
Australia
First Name
Peter
My Ride
Triumph Street Twin 900
Riding Since
2013
Hi. Posted last week about a tiny oil leak coming from the clutch actuator arm area. There was definitely a leak there but have fixed that leak but it seems that there is also another one. After taking the bike for a long ride, park it in the garage and then next day noticed another oil leak.

This time it was on the silver exhaust guard as well as from a large allen bolt behind the muffler guard and MAYBE the hex bolt to the left of that too, as seen in the attached photos.
I can confirm that it is not excess oil, as I washed the bike thoroughly straight after servicing it and before riding it and can also confirm that it is not from the new clutch cover gasket, as that is dry around the surfaces.

Can anyone identify this bolts/parts, is the allen one an oil gallery plug? Part numbers?, etc. I can't seem to find them on the parts diagram.
And best/easiest fix for it?
It's a Triumph Street Twin 2021.

TIA
 

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I'm sure someone will know what the likely culprit is, the Street Twin is the 900 Bonneville motor fitted to the T-100 correct?
 
I have double checked that both bolts are tightened fully.

I guess also like to know the following as well:
1. Where on the parts diagram is it/which category?
2. What the best fix is? I can only guess at this stage, until confirmed, that it's high temp & oil resistant thread sealant?
3. What size bolt is it, M14 x **?
4. Should I replace the washers around the bolts also?
And 5. The bolt to the very left, also circled in red, do I also apply that same fix (whatever it may be), to it too?

If possible I'd like to get confirmation and start the fix either tomorrow or the day after as later this week I have a couple days off and would just like to ride, oil leak free. So I appreciate any help/answers I can get, as quickly as I can get.
 
The allen plug looks like the oil drain plug. If the crush washer on it is crushed and reused it may not seal like it's supposed to. That may be blowing oil drips onto other bits so get a new crush washer and a clean oil catch pan and replace it first (you can reuse the oil if it's fairly fresh). Take for a test ride and see if the leak is still there. If so then move on to the next bolt, if not, problem solved.
 
atomsplitter said:
The allen plug looks like the oil drain plug. If the crush washer on it is crushed and reused it may not seal like it's supposed to. That may be blowing oil drips onto other bits so get a new crush washer and a clean oil catch pan and replace it first (you can reuse the oil if it's fairly fresh). Take for a test ride and see if the leak is still there. If so then move on to the next bolt, if not, problem solved.
Click to expand...
Thank you for responding, it is much appreciated.
I can 100% guarantee that it is not the oil drain plug. The oil drain plug is underneath the bike, almost next to the oil filter.
Secondly I would replace the washer...if I knew the size and/or part number for it, or where to look on the parts diagram.
 
Thos are on the top of the motor?
 
atomsplitter said:
Have you looked here? (The 2017 should be similar to the 2021)

Crankcase Bolts. 2017 Triumph Street Twin | HERMYS TRIUMPH eSTORE, Port Clinton PA

2017 Triumph Street Twin Crankcase Bolts
www.triumphestore.com
Click to expand...
I did come across that in my search but that is that most horrible diagram I have ever seen, to be honest. It looks like something I drew in grade 4...but worse. And I don't think it has the bolts from the side of the motor (where the leak on my bike is coming from) on that diagram.
 
I think I found what that bolt on the far left is. I THINK it is part number T3450000 and it appears to be "PLUGPTF-SAE SHORT3" OR part number: T3455555 "PLUGFLGDM10X10PH".

Another forum thread did mention that it might be a crankcase bolt but also mentioned that they can be resealed.
So safe to remove and apply sealant to it?
 
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I am confident enough that the leak is coming from both those bolts I've circled, not just the oil gallery plug. Because the left bolt actually has more oil on it than the oil gallery bolt. I can't understand how oil would leak from around the oil gallery plug, then travel to the left and reach or build up on the underside of that bolt on the left. It's almost impossible. It sort of defies gravity and logic.
So in my mind the only plausible cause is that both bolts themselves are the source of the leaks.

On top of that I also kind of want to tend to all the potential leak spots in the one go and then not have to bother doing so later for a 3rd time next week. I'm quite over tending to oil leaks, it's in fact really starting to piss me off as I just simply want to ride with peace of mind.

I'm hoping someone, anyone at this point can tell me if it is safe to remove and reseal both those bolts.
 
As I suspected, it IS ALSO coming from that far left crankcase bolt. From the sealing washer area.
 

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The above photo and bit of evidence shows that it IS the crankcase bolt on the far left that is leaking too. In fact that bolt had more oil on/around in it than the gallery plug did. I have now seen and felt that bolt having a leak twice now.

So next step is removing that bolt and resealing it. It is extremely tight, to the point that I'm considering using the impact wrench on it and throwing the bolt into a brick wall or into something out of frustration and anger because my patience is running out with all these oil leaks. Am trying to bite my tongue and hang in there but these leaks, along with that bolt being awfully tight and still leaking plus not really getting many responses on here is testing my patience. I hope that can be understood. This is more of a cry out for advice regarding removal of that awfully tight bolt, knowing now that it is leaky, before my anger/frustration gets to boiling point where I start throwing shiz, kicking shiz and punching shiz.

If anyone is reading this, please do advise me of any other method to remove the tight bolt, if anyone has any other suggestions, I'd like to know.
 
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I get you're frustrated. understandable. And that there aren't a lot of responses that have been much help, including mine. If this were my project and I ran into your level of anger over what should be a simple fix I would resort to the last thing anyone wants to do, ask the dealer mechanic for advice. While that is never pleasant it sometimes bears some useful fruit because they have seen something maybe similar. So before you start throwing tantrums and tools (been there myself) pick up the phone and talk to someone with some experience with the machine you have, it actually might help. One other note, I have 5 Triumphs (three of which are twins) and none leak any oil, so I think this situation is either an anomaly or I'm supremely lucky.
 
atomsplitter said:
I get you're frustrated. understandable. And that there aren't a lot of responses that have been much help, including mine. If this were my project and I ran into your level of anger over what should be a simple fix I would resort to the last thing anyone wants to do, ask the dealer mechanic for advice. While that is never pleasant it sometimes bears some useful fruit because they have seen something maybe similar. So before you start throwing tantrums and tools (been there myself) pick up the phone and talk to someone with some experience with the machine you have, it actually might help. One other note, I have 5 Triumphs (three of which are twins) and none leak any oil, so I think this situation is either an anomaly or I'm supremely lucky.
Click to expand...
I appreciate your response and understanding Sir. The thing is I have called 2 Triumph dealerships 1 of which said "I have no idea what you're talking about and never once heard of or seen a Triumph leaking from there", the other of which said "I can take a look at that but not for 3 weeks and will probably have to back order parts which will take at least 4 weeks to arrive here, depending on what it is". On top of that, there are no Triumph dealerships in my state. They are all interstate. We don't have many of them here. Hence why I cannot even take my bike to that dealership that said they'd take a look at it. So that's working against me too.
Lastly, I wouldn't be on here posting about it if there was a Triumph dealership/specialist mechanic that I'm able to actually take my bike into. Which has obviously added to my frustration...and then asking for help, nicely, yields sweet f*** all responses let alone any that help, which brings my frustration level to boiling point. A boiling point in which I succumbed to by throwing a ratchet through my garage window on purpose and booted the bike over by kicking and planting a nice big dent in the fuel tank...as a result of everything I've just mentioned. I have NO regrets. Was worth it. My property so therefore my choice to get destructive with it.
I'm just in the mood for ONE more thing to go against me, one wrong look, one wrong word said to me, one last thing on the bike to f*** up or not go as planned. I'm almost begging for it so I have more of an excuse to unleash my anger. I tried the nice, patient, calmly approach, and clearly it had no difference to the end result, the result remained the same, so why not take the angry approach then?
Anyway, rant over.
 
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triumphantrider said:
I appreciate your response and understanding Sir. The thing is I have called 2 Triumph dealerships 1 of which said "I have no idea what you're talking about and never once heard of or seen a Triumph leaking from there", the other of which said "I can take a look at that but not for 3 weeks and will probably have to back order parts which will take at least 4 weeks to arrive here, depending on what it is". On top of that, there are no Triumph dealerships in my state. They are all interstate. We don't have many of them here. Hence why I cannot even take my bike to that dealership that said they'd take a look at it. So that's working against me too.
Lastly, I wouldn't be on here posting about it if there was a Triumph dealership/specialist mechanic that I'm able to actually take my bike into. Which has obviously added to my frustration...and then asking for help, nicely, yields sweet f*** all responses let alone any that help, which brings my frustration level to boiling point. A boiling point in which I succumbed to by throwing a ratchet through my garage window on purpose and booted the bike over by kicking and planting a nice big dent in the fuel tank...as a result of everything I've just mentioned. I have NO regrets. Was worth it. My property so therefore my choice to get destructive with it.
I'm just in the mood for ONE more thing to go against me, one wrong look, one wrong word said to me, one last thing on the bike to f*** up or not go as planned. I'm almost begging for it so I have more of an excuse to unleash my anger. I tried the nice, patient, calmly approach, and clearly it had no difference to the end result, the result remained the same, so why not take the angry approach then?
Anyway, rant over.
Click to expand...
OK, I get it. When I was working for a living I lived out in the sticks and did almost all the maintenance on all my equipment including a 1941 Farmall H tractor. That thing was originally designed to run on distallate (basically kerosene) and my shop wall had a fair number of tools bounce off it as a result of one breakdown or another and the lack of parts availability. I was fortunate though, there was a semi local (about 15 miles away) tractor mechanic that was intimately familiar with my tractor (I think he was born before WW I) that gave free advice and even rebuilt my transmission when the bearings went out. He even converted it to a 12 volt coil vice the 6 volt magneto it was born with.

You know you can still ride the bike with the oil leaks and just top up before a ride, it's not the only solution but is the least frustrating, i.e. do nothing and just live with the mess it makes. Kinda like owning an old Harley, put kitty litter down cuz it's gonna make a mess on the floor.
 
What you could do is to check your oil levels then put a pan under the bike take these out one at a time and see what runs out and then check your oil levels again. You can then replace the washers put new sealant on it and bolt it all up again and that should be that. All the years working on bikes I have always found most oil leaks like this are hit and miss and vary vastly from bike to bike.

Once out I am sure you must have some type of shop that sells nuts and bolts where you could take these to and have new washers matched up to them.

Just looking at your photo it appears that they both have been marked with a pen so it seems that they have been worked on before by someone at some point.
 
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